Inheritance and Variation Patterns Quiz
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Questions and Answers

What is the process where the haploid nucleus of a sperm cell merges with the haploid nucleus of an egg cell to form a diploid zygote?

  • Crossing over
  • Meiosis
  • Mitosis
  • Fertilization (correct)

    • In which stage of meiosis does crossing over occur?

  • Telophase I
  • Prophase I (correct)
  • Metaphase I
  • Anaphase I

    • What is the term for the division that forms gametes like sperm and eggs?

  • Cytokinesis
  • Meiosis (correct)
  • Fertilization
  • Mitosis

    • Which genetic disorder is caused by the presence of an additional chromosome 21?

    <p>Trisomy 21 (Down syndrome)</p> Signup and view all the answers

    Which event in meiosis can lead to genetic variation in offspring?

    <p>Crossing over</p> Signup and view all the answers

    In Mendelian genetics, what are different versions of a gene for a trait called?

    <p>Alleles</p> Signup and view all the answers

    What is the main cause of a person's unique characteristics?

    <p>The set of genes inherited from parents</p> Signup and view all the answers

    What is the function of sister chromatids during cell division?

    <p>Exact copies made during replication</p> Signup and view all the answers

    Which cells have one set of chromosomes and are produced in reproductive organs?

    <p>Gametes</p> Signup and view all the answers

    What is the difference between continuous and discrete variation?

    <p>Continuous variation shows a range of traits like height, mass, and color, while discrete variation is not visibly apparent like blood type.</p> Signup and view all the answers

    Where do centromeres, the 'pinched-in' areas on chromosomes, attach during cell division?

    <p>To spindle fibers</p> Signup and view all the answers

    Which term refers to different versions of the same gene, such as purple flower vs. white flower?

    <p>Alleles</p> Signup and view all the answers

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